Engine.



D. BERRY.

ENGINE.

APPLICATION FILED 001125. 1913.

WW 2 Mi 2 2 snmTS-SHEE Patented Jan. 19, 1915.

WITNESSES ATTORNEYS IHE NORRIS PE TEES 60.. PHOTOLITHOH WASHINCI'ON. L-

-D. BERRY.

ENGINE.

,APPLIGATION FILED 00125, 1913.

1,125,641. Patented Jan. 19, 1915.

2 SHEETS-SHEET 2.

INVENTOR Ba d Earn,

ATTORNEYS WITNESSES THE NORRIS PETERS 60.. PHOTO-LITHO.. WASHING rON. D.c.

' fluid takes place through the piston, which 5% PATENT pr on.

DAVID BERRY, 0F ANCHOR BAY, CALIFORNIA.

ENGINE.

Application filed October 25, 1913.

To all whom it may, concern:

Be it known that I, DAVID BERRY, a citizen of the Republic ofSwitzerland, and a resident of Anchor Bay, Gualala, in the county ofMendocino and State of California, have invented a new and ImprovedEngine, of which the following is a full, clear, and exact description.

This invention relates to engines of the reciprocatory type whereinwater, steam, air or other fluid may be used as the motive medium.

The invention has for its general objects "to improve and simplify theconstruction and operation of engines of the character referred to soas'to be reliable and efiicient in use and so designed as to developgreat power.

A further object of the invention is the provision of a double-actingengine of that type in which the exhaust of the motive has at its endsor head valves which are so arranged that one is open while the other isclosed, so that the used motive fluid can exhaust through the open valveas the piston moves in one direction while the active motive fluid isoperating on the other valve and piston to drive the latter.

Anadditionalobject ofthe invention is the provision of simple, effectiveand novel means 'for operating the slide valve that controls theadmission of motive fi uid through the cylinder, there being connectingconduits between the slide valve and cylinder which are capable of beingcontrolled for adapting the engine for use with water under pressure orwith air or any other elastic fluid as the motive medium.

With such objects in view, and others as will appear as the descriptionproceeds, the invention comprises various novel features of constructionand arrangement of parts such as will be set forth with particularity inthe following description and claims appended hereto.

In the accompanying drawings, which illustrate certain embodiments ofthe invention, and wherein similar characters of reference indicatecorresponding parts in all the views, Figure 1 is a side view of theengine with portions in section for showing the slide valve operatingmeans; Fig. 2 is a plan Specification of Letters Patent.

\ ing means.

Referring to the drawing, A designates the cylinder of the engine whichis in horizontal or any other suitable disposition, and slidable thereinis a piston B which is connected with the piston rod 1 that extends outthrough a stuffing box 2 and is connected w th a cross-head 3, suchcross-head being slidable on guides 4 and united by a connecting rod 5with a crank 6 on the shaft 7 of the engine, there being on the shaftone or more flywheels 8 from which power may be derived for drivingmachinery.

The piston B, as shown in Fig. 3, comprises heads 9 and 10 united by atubular body 11. This tubular body 11 is of smaller diameter than theheads of the piston so that an annular'exhaust chamber 12 is formed bythe wall of the cylinder A and by the heads and body of the piston. Atthe center of the cylinder is an exhaust pipe 13 which is always incommunication with the chamber 12. The chamber or bore 14 of the pistonextends entirely through the same from one head to the other, and at theends of this bore or passage are valve seats 15 and 16 that are adaptedto be engaged respectively by the exhaust valves 17 and 18. The valves17 and 18 are rigidly connected together by a rod 19 the length of therod being such that when one valve is seated the other is unseated. Eachvalve is provided with guide lugs 20 which are always in engagement withthe bore of the piston so that the valves will be maintained inalinement with their seats. The exhaust valves are adapted to beoperated as the piston B reaches the the piston continues to move. Themeans for shifting the valve structure when the piston moves to theright is carried by the piston rod 1. This rod is united to the head i 5of the piston by a yoke 23, and on the piston rod is a collar 24 betweenwhich and the yoke is a helical compression spring 25 and encircling thepiston rod, such collar 24 carrying an L-shaped member 26 thatconstitutes an abutment against which the valve 18 strikes as the pistonmoves to the right. During the last part of the piston stroke to theright, the collar 24 strikes the seat or abutment 27 on the head 28 ofthe cylinder A. The piston continues to move and causes the valve 18,which is held stationary for the time being by the member 26, to engagewith the seat 16 at the end of the piston. The spring 25 is compressedduring this action, but as soon as the piston'moves again 'to the leftthe spring 25 will expand and throw the member 26 out of engagement withthe valve 18, so that the latter can open when the piston reaches theend of its stroke to the left.

The motive fluid is admitted to the cylinder A at its ends throughconduits or ports 29 and 30, the supply through one conduit alternatingwith the supply through the other by means of a slide or other valvethat controls the conduits. Then the piston is in the position shown inFig. 3, live motive fluid is about to enter the left end of the cylinderso as to drive the piston to the right, there being in the right end ofthe cylinder the motive fluid which has spent its energy The valve 18 isopen while the valve 17 is closed, and consequently as the piston movesto the right the exhaust fluid passes out through the open end of thepiston bore, through the ports I) in the body of the piston, 12 and theexhaust pipe 13. When the piston reaches the-right end of its stroke thevalve 18 will close and the valve 17 open, so that as soon as the motivefluid is admitted to the right end of the cylinder the piston will moveto the left, forcing out the exhaust fluid in the left end of thecylinder by way of the left open end of the piston.

On the cylinder B is mounted a valve chest C which contains a portedvalve seat 31 for the slide valve 32 which is disposed within the valvechamber 33. This valve 32 controls ports 34 and 35 that communicaterespectively with the chambers 36 and 37. The chamber 36 is united by apipe 30 that leads to the right end of the cylinder A as shown in Fig.2, while the chamber 37 connects by the pipe or conduit 29 with the leftend of the cylinder. The slide valve 32 is held against its seat bymeans of a springpressed plate 38 and the operating rod 39 for the slidevalve extends out of the stuff- 65 ing box 40 in the wall of the chamber33.

through the chamber- This rod is reciprocated by some moving part of theengine in timed relation to the strokes of the piston, so that themotive fluid will be admitted to or cut off from the cylinder at theproper instant. The inlet chamber 33 is connected with a source ofsupply through the pipe 41, there being a throttle valve 42 in the pipefor regulating the pressure or cutting off the flow of the fluid. Whenwater or any other liquid under pressure is employed, air domes 43 maybe connected with the supply pipe on the engine side of the throttle andwith the conduits 29 and 30, so as to impart elasticity to the motivefluid. hen steam or elastic fluid is used for motive medium these airchambers 43 may be cut out of use by closing the valves 44.

The means for operating the slide valve comprises, as shown in Fig. 1, asliding structure D arranged on the cross-head guide 4. This structurehas an arm 45 which is adjustably connected with the slide valve rod 39.The device D has spaced abut ments 46 and 47, between which projects alug 48 on the cross-head 3. The distance between the abutments 46 and 47is slightly less than the full stroke of the cross-head, so that at theend of each stroke of the latter, the lug 48 will strike one abutment orthe other and therebyimpart movement to the slide valve, whereby thelatter opens the port 34 and closes the port 35, or vice versa. Theabutments 46 and 47 are adjustable by being fastened to the device D bybolts 48 which pass through blocks that form the abutments and throughslots 49 in the device D.

In Fig. 6 is shown means for lubricating the slide valve rod 39, suchdevice comprising an oil cup or other reservoir 50 which has a dischargepipe 51 which extends into. the inlet chamber 33 in the valve chest,such discharge pipe 51 being in the shape of a spout that has its outletends 52 disposed in a passage 53 that leads through the stuffing box 40.When water is the motive fluid, the pipe 50 will supply this stuffingbox with oil, but when steam is employed the oil feeding pipe 51 isturned to the dotted line position, Fig. 6, so that oil will drop uponthe slide valve and its rod, thereby effectively lubricating the valveand stufiing box.

From the foregoing description taken in connection with the accompanyingdrawings, the advantages of the construction and method of operationwill be readily understood by those skilled in the art to which theinvention appertains, and while I have described the principle ofoperation together with the apparatus which I now. consider to be'thebest embodiment thereof, I desire to have it understood that theapparatus" shown is merely. illustrative, and

that such changes may be made when delast part of its stroke for causingthe said sired as are within the scope of the appendmember to engage thevalve and shift the ed claims. same with respect to the piston.

Having thus described my invention, I 2. In an engine, the combinationof a cylclaim as new and desire to secure by Letters inder, a pistonhaving an exhaust passage, a Patent: I central valve for the exhaustpassage, a yoke 1. In an engine, the combination of a cylfastened to thepiston and bridging the inder, means at the ends thereof for admitvalve,a rod connected with the yoke, a memting fiuid alternately to thecylinder, a pisber slidable on the rod to form an abut- 16 ton in thecylinder having a central eX ment with which the valve engages, wherebyhaust passage, a reciprocatory valve mountthe valve is held stationaryWhile the piston ed on the piston and having parts arranged moves to theend of its stroke, and a spring respectively to close the passage at oneend on the piston rod and disposed between the while the opposite end ofthe passage is member and yoke for moving the member 1 opened, a yokefastened to one end of the out of engagement with the valve When thepiston, a rod connected with the yoke, a piston reverses its stroke.member slidable on the rod and having a In testimony whereof I havesigned my valve-engaging portion disposed between name to thisspecification in the presence of the yoke and adjacent end of thepiston, two subscribing witnesses.

20 and a helical spring carried by the rod and DAVID BERRY.

engaging the yoke and member, said mem- Witnesses: her being adapted toengage one end of the DAVID A. BERRY, cylinder while the piston movesduring the J. C. HALLIDAY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

